The impact, devastation and cost of forest fires in America’s West have multiplied in recent decades. Wildfires are stronger than ever, tearing through communities and overwhelming the forest service budget.

In a direct challenge to the positions and policies of the Trump administration, a leaked draft of a scientific report from 13 US federal agencies says there's no doubt humans are largely responsible for climate change. It warns of the stark consequences now and in the future.

A new oil pipeline from Alberta to British Columbia would cross native land and send more than six times as many tankers through crowded waterways between Vancouver and Seattle. That has people on both sides of the border vowing to fight.

Canada's Prime Minister Justin Trudeau promises to make steep cuts in climate pollution while still increasing the flow of dirty tar sands oil. It's a high-wire act that has him taking fire from both sides.

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07/04/2015 - 11:30am

El Niño is back. That could mean trouble for crops from Africa to Australia, drought relief for Brazil and California — and new record global temperatures as the Pacific Ocean warms up and brings the heat along with it.

You may have noticed that more and more wine bottles — even expensive ones — are increasingly coming with screw tops and synthetic stoppers. You might not think much about the stopper when you make a purchase, but cork producers want you to start. They're mounting a campaign to show that real cork is better for the planet.

Negotiators have agreed to a global phase-out of chemicals that run some air conditioners and refrigerators, but are also big contributors to global warming. That has countries and researchers scrambling to come up with clean and affordable alternatives.

Global warming has profound effects on our planet, including melting Earth’s immense ice sheets. A new study from NASA reveals an unexpected result of all that ice melting: It’s moving the axis of rotation of the entire planet.

Updated

02/26/2015 - 10:30am

There may be a counterintuitive explanation for the deep freeze that hit New England this winter: The rapidly warming Arctic is causing big disruptions in the jet stream, which carries weather across North America. Is this the worst winter you've experienced?